Sebea e



woman.

' S-, R. MATHEWSON.

' SAW GUMMBR. No. 345,388. PatentedJuly 13, 1886.

W i YYLMQ/A; nventor.

UNITED STATES PATENT OFFICE.

SEBRA R. MATHEWSON, OF PLEASANT VALLEY, AS SIGNOR OFONE-HALF TO ROBERT BAKER, OF PORTEBSVILLE, CALIFORNIA.

e SAW-GUMMER.

EJPECIFICATION forming part of Letters Patent No. 345,388, dated July 13, 1886.

Application filed October 10, 1S85. Serial No. 1T9,561. (No model.)

To all whom it may concern: firmly set to the opposite disk of the spindle.

Be it known that I, SEBRA It. MATHEWSON, The adjusting thumbscrews e pass through of Pleasant Valley, Tulare county, State of the yoke-frame and set firmly'to thesaw-plate. California, have invented an Improved Saw- The feed of the glimmer-plate is regulated by 5 5 Gummer; and I hereby declare that the folthe treadle g, suspended from hooks connected lowing is a full, clear, and exact description to the yoke-frame. of the same, reference being had to the accorn- The operation of my improved device is as panying drawings. follows: The saw-plate is placed on the spin- My invention relates to an improved means dle fixed to a bench, and is firmly held by the to for forming teeth in saw-plates and reforming disk and nut z. The device is placed over the teeth in Worn saw-plates. saw-plate, which passes between the yoke- The following description fully explains the frame d, and extends to the ginnnier-plate 0, nature of my said invention and the manner and is adjusted to any desired position by the in which I proceed toconstruct, apply, and thumb-screws e. The glimmer-plate is re 55 I use the same, the accompanying drawings be volved by the crank, and its feed is regulated in g referred to-by figures and letters. to any required depth in the saw-plate by the Figure 1, represents a front elevation of a pressure on the treadle. The width of the saw-plate and the gummer device. Fig. 2 tooth in its formation is regulated by moving represents an end view ofa saw-plate and the the gummer through the medium of the han- 6o gummer device. Fig. 3 represents an endle a.

larged View of the gummer. The advantages of my improved gummer Myimproved saw-gummer device is simple are its easy application and adjustment, its in its construction and application. The methorough action in forming teeth in sawtallicshouldera is prolonged ina yoke-frame, plates, and reforming teeth in worn saw- 65 d, to which the treadle-hooks fare attached.- plates.

A pin projects from the shoulder, to which Having thus fully described my invention, the handle a, preferably of wood, is attached what I claim, and desire to secure by Letters and held by a screw. A shalt, b, extends Patent, i's through the yoke'frame and holds the crank In a saw gunnner, the gummer-plate c and b for revolving the gnmmer-plate, which is handle a, in combination with yoke-frame (I, set on the shaft. The teeth of the gummershalt b, crank b adjusting thumbscrews e, plate are cut at nearly a right angle, Fig. 3, and treadle g, substantially as described, and having a square edge conforming to the thickfor the purpose set forthfi ness of the gummer-plate. The action of the In testimony whereof I have hereunto set 75 gummer on the saw-plate is similar to that of my hand and seal. any reaming-tool. The saw-plate is attached I W I 7 T to a spindle, h, fixed on a bench. The spina MATHE dle, enlarged, is near the point of attachment \Vitnesses: to the saw-plate to a beveled disk, and has at A. B. SMITH, 40 its extreme end a thread, which receives a FRANK P. TAYLOR,

disk and nut, i, by which the saw-plate is G. O.'KNAPP. 

